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DY—100(150)型采煤机牵引部的主油泵.过去使用的是63CCY14—1B型液压泵。该泵在井下生产运转中暴露了不少问题,主要是寿命短、可靠性差。如:经过井下运转一段时间后,滑履和柱塞球铰易松动,轴向串动间隙增大;斜盘被拉毛,磨损比较严重;变量机构不灵活;外部泄漏增大等等。一般只能使用2～3个月,即需更换。 63CCY14—1B型液压泵在投入井下使用前,是经过实验室试验的。但根据机械工业部《JB2137—77》做的液压泵型式试验与采煤机在
DY-100 (150) Shearer Main Oil Pump Used 63CCY14-1B type hydraulic pump in the past. The pump exposed a lot of problems in the underground production and operation, mainly short life expectancy, poor reliability. Such as: After running downhole for some time, slipper and plunger ball hinge is easy to loose, the axial movement of the gap increases; swash plate hair, wear more serious; variable mechanism is not flexible; external leakage increases and so on. Generally only use 2 to 3 months, which needs to be replaced. 63CCY14-1B type hydraulic pump put into underground use, is through laboratory tests. However, according to the Ministry of Machinery Industry “JB2137-77” to do the hydraulic pump type test and shearer in